Question 1

The trophoblast has many of the characteristics of ________ cells.

Accepted Answer

A)  cardiac
B)  cancer
C)  infectious
D)  smooth muscle
E)  None of the answers is correct.F) D) and E)
G) B) and E)

Question 2

Which hormone causes the milk ejection (milk let-down) reflex?

Accepted Answer

A)  prostaglandins
B)  human placental lactogen
C)  prolactin
D)  placental prolactin
E)  oxytocinF) A) and E)
G) A) and D)

Question 3

Which of the following traits is a sex-linked inheritance?

Accepted Answer

A)  albino pigmentation
B)  red hair
C)  hemophilia
D)  Huntington's disease
E)  sickle cell anemiaF) A) and B)
G) None of the above

Question 4

Figure 27-2
-Identify the structure labeled "6."

Accepted Answer

A)  umbilical cord
B)  placenta
C)  chorion
D)  amnion
E)  myometriumF) None of the above
G) B) and D)

Question 5

Name the three major interacting hormonal events associated with the onset of puberty.

Accepted Answer

A)  Increased GnRH production,increased LH and decreased FSH production,activation of ovaries and testes by LH.
B)  Decreased GnRH production due to estrogen and testosterone negative feedback,decrease in LH and FSH release by the anterior pituitary gland,and decreased LH and FSH sensitivity by the ovaries and testes.
C)  Increased GnRH production,increased sensitivity of the anterior pituitary to GnRH and the subsequent release of LH and FSH,and increased sensitivity of ovaries and testes to LH and FSH.
D)  Increased hypothalamic LH production,anterior pituitary release of estrogen and testosterone,estrogen activation of ovaries and testosterone activation of testes.
E)  Increased hypothalamic estrogen and testosterone production,estrogen activation of ovaries and testosterone activation of testes.F) B) and E)
G) B) and D)

Question 6

Figure 27-1
-What is the developmental fate of "9?"

Accepted Answer

A)  forms the embryo
B)  forms the trophoblast
C)  forms the chorion
D)  forms the placenta
E)  dissolves completelyF) A) and C)
G) D) and E)

Question 7

Explain the effect of testosterone on the male respiratory system at puberty.

Accepted Answer

Testosterone stimulates growth...

Question 8

Which hormone stimulates the milk let-down reflex?

Accepted Answer

A)  progesterone
B)  oxytocin
C)  estrogen
D)  relaxin
E)  GnRHF) C) and E)
G) A) and B)

Question 9

All of the following occur at puberty except

Accepted Answer

A)  FSH levels rise.
B)  GnRH levels decline.
C)  levels of sex hormones rise.
D)  skeletal muscle fibers are stimulated.
E)  secondary sexual characteristics begin to develop.F) All of the above
G) D) and E)

Question 10

Explain the difference between colostrum and breast milk.

Accepted Answer

Colostrum contains antibodies and is pro...

Question 11

Embryonic and early fetal development occurs in the ________ trimester.

Accepted Answer

A)  first
B)  second
C)  thirdD) All of the above
E) B) and C)

Question 12

The ectoderm forms

Accepted Answer

A)  muscle.
B)  blood.
C)  neural tissues.
D)  the lining of the stomach and small intestine.
E)  the urinary system.F) All of the above
G) None of the above

Question 13

By the end of gestation,which of the following has not occurred?

Accepted Answer

A)  Maternal blood volume has increased 50%.
B)  Maternal nutritional requirements has increased 30%.
C)  The uterus has increased in size by 10 fold.
D)  The kidney's GFR has increased 2 fold.
E)  The bladder size has been reduced.F) B) and D)
G) B) and C)

Question 14

Which of the following is not part of fertilization?

Accepted Answer

A)  release of acrosomal enzymes
B)  oocyte activation
C)  completion of meiosis II
D)  amphimixis
E)  completion of meiosis IF) A) and E)
G) A) and D)

Question 15

Describe the process that forms the primary germ layers and cite the layer that contributes to nearly all body systems.

Accepted Answer

A)  Gastrulation forms the primary germ layers from the embryonic disc.The endoderm contributes to nearly all body systems.
B)  Gastrulation forms the primary germ layers from the embryonic disc.The mesoderm contributes to nearly all body systems.
C)  Formation of the primitive streak gives rise to the primary germ layers.The ectoderm contributes to nearly all body systems.
D)  Formation of the primitive streak gives rise to the primary germ layers.The endoderm contributes to nearly all body systems.
E)  Gastrulation forms the primary germ layers from the embryonic disc.The ectoderm contributes to nearly all body systems.F) D) and E)
G) C) and E)

Question 16

Based on the illustrations showing the locations of the internal organs in nonpregnant and pregnant women,explain why some pregnant women experience difficulty breathing.

Accepted Answer

Some pregnant women experience...

Question 17

The oval,three-layered sheet produced by gastrulation is called the

Accepted Answer

A)  embryo.
B)  ectoderm.
C)  inner cell mass.
D)  embryonic disc.
E)  yolk sac.F) A) and B)
G) B) and E)

Question 18

In pregnancy,expansion of the uterus results from

Accepted Answer

A)  increased production of additional smooth muscle cells.
B)  hypertrophy of smooth muscle cells.C) A) and B)
D) undefined

Question 19

The process of cell division that divides the cytoplasm of the zygote among blastomeres is called

Accepted Answer

A)  cleavage.
B)  implantation.
C)  placentation.
D)  embryogenesis.
E)  blastulation.F) C) and D)
G) None of the above

Question 20

The clinical term for "growing old" is

Accepted Answer

A)  maturation.
B)  aging.
C)  senescence.
D)  apoptosis.
E)  senility.F) D) and E)
G) C) and D)

Exam 27: Development and Inheritance

In pregnancy,expansion of the uterus results from

Correct AnswerverifiedShow Answer

The oval,three-layered sheet produced by gastrulation is called the

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All of the following occur at puberty except

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Explain the difference between colostrum and breast milk.

Correct AnswerverifiedColostrum contains antibodies and is pro...View AnswerShow Answer

The ectoderm forms

Correct AnswerverifiedShow Answer

Which hormone causes the milk ejection (milk let-down) reflex?

Correct AnswerverifiedShow Answer

Which of the following is not part of fertilization?

Correct AnswerverifiedShow Answer

The clinical term for "growing old" is

Correct AnswerverifiedShow Answer

Name the three major interacting hormonal events associated with the onset of puberty.

Correct AnswerverifiedShow Answer

Explain the effect of testosterone on the male respiratory system at puberty.

Correct AnswerverifiedTestosterone stimulates growth...View AnswerShow Answer

The trophoblast has many of the characteristics of ________ cells.

Correct AnswerverifiedShow Answer

By the end of gestation,which of the following has not occurred?

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Figure 27-1 -What is the developmental fate of "9?"

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Which of the following traits is a sex-linked inheritance?

Correct AnswerverifiedShow Answer

Describe the process that forms the primary germ layers and cite the layer that contributes to nearly all body systems.

Correct AnswerverifiedShow Answer

Which hormone stimulates the milk let-down reflex?

Correct AnswerverifiedShow Answer

Based on the illustrations showing the locations of the internal organs in nonpregnant and pregnant women,explain why some pregnant women experience difficulty breathing.

Correct AnswerverifiedSome pregnant women experience...View AnswerShow Answer

Figure 27-2 -Identify the structure labeled "6."

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Embryonic and early fetal development occurs in the ________ trimester.

Correct AnswerverifiedShow Answer

The process of cell division that divides the cytoplasm of the zygote among blastomeres is called

Correct AnswerverifiedShow Answer

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Colostrum contains antibodies and is pro...
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Testosterone stimulates growth...
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Some pregnant women experience...
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